Originally Posted by
adipe
naphta is a poor choice for a volatile solvent.
you could either use xylene (which will still take sooo long to evaporate completely) or just the hot bath method. having a jar (with lid) in a pot full of slowly boiling water. you only need to have the jar a bit suspended, an inch above the pot's bottom (not touching) and then you don't need much water in the pot (heat transfer through condensation). the pot should have a lid as well, to not lose too much vapor (energy waste and humidity). have intense heat for the first minute and then the minimum heat on that pot.
My lube turns to a mush much below 75F. I place the applicator bottle in hot tap water to return it to a water like viscosity. I always apply the lube a day before riding, or right after a ride, so it's dried by the time I use the bike. If I make a new batch, I melt the paraffin, add the gear lube, then pour into the camp stove fuel, so it all mixes quickly. I never heat the solvent, except in hot tap water.